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Old 4-Feb-2018, 1:34 AM   #1
jerrymc
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Join Date: Jan 2015
Location: 92336
Posts: 27
RCA VH226F Motor

Not sure if this happened to anyone, but my 2 year old RCA VH226F rotor antenna motor snapped during the last winds we had here in Fontana, CA. (see pics)
I had the pole tied at 3 different locations so as to not allow the J-pole or extension pole to bend when the winds hit.
I have 2 different antennas on the same pole.
(HD8200XL and the HDB91X)

I didn't think Fontana winds were as bad as Oklahoma or Kansas, but I did notice the metal used for these is a pretty thin joint.

I suppose I can weld the joints back together if my friend will let me use his arc welder.
(The last pic is a temp. setup while I attempt to fix this motor.)

Has anyone else had this experience with these VH226F motors???

https://drive.google.com/file/d/1i-d...ew?usp=sharing
https://drive.google.com/file/d/10yB...ew?usp=sharing
https://drive.google.com/file/d/1oiO...ew?usp=sharing
https://drive.google.com/file/d/1r6j...ew?usp=sharing
https://drive.google.com/file/d/1ZkW...ew?usp=sharing
https://drive.google.com/file/d/10WF...ew?usp=sharing
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HD8200XL with RCA TVPRAMP1R pre-amp aimed at Mt. Wilson (Los Angeles) in Etiwanda area.
CM3410 dist. amp in attic for a 5 room hookup.

Located in foothills behind Mt. Baldy, and experiencing signal loss and pixelation depending on time of day.
Using RCA rotator motor now to tweak.

Location Radar
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Old 4-Feb-2018, 6:33 PM   #2
rabbit73
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Join Date: Aug 2012
Location: S.E. VA
Posts: 2,153


Hello, jerry

What you have up there is too much for that little rotator. If you must use a small rotator, you should use a thrust bearing, also called an alignment bearing. They are a necessary item, but most manufacturers have discontinued them.



The trick is to get the rotator and bearing in alignment so that the axis of rotation of the bearing is the same distance away from the mast as the axis of rotation of the motor.

http://www.ad5x.com/images/Articles/TB105.pdf



DXEngineering sells the Yaesu Rotator Mast Bearing GS-050
https://www.dxengineering.com/search...rder=Ascending

https://www.dxengineering.com/parts/ysu-gs-050

You would have to be handy with tools to make it work.

For that much antenna you need a ham rotator, but they are more expensive.
https://www.dxengineering.com/parts/ysu-g-450a
Attached Images
File Type: jpg jerrymcTVFant3.jpg (145.6 KB, 146 views)
File Type: jpg TB-105.jpg (119.0 KB, 155 views)
File Type: jpg CM9523bearing.jpg (131.1 KB, 147 views)
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If you can not measure it, you can not improve it.
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Last edited by rabbit73; 4-Feb-2018 at 7:20 PM.
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Old 5-Feb-2018, 5:11 PM   #3
jerrymc
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Join Date: Jan 2015
Location: 92336
Posts: 27
Quote:
Originally Posted by rabbit73 View Post


Hello, jerry

What you have up there is too much for that little rotator. If you must use a small rotator, you should use a thrust bearing, also called an alignment bearing. They are a necessary item, but most manufacturers have discontinued them.



The trick is to get the rotator and bearing in alignment so that the axis of rotation of the bearing is the same distance away from the mast as the axis of rotation of the motor.

http://www.ad5x.com/images/Articles/TB105.pdf



DXEngineering sells the Yaesu Rotator Mast Bearing GS-050
https://www.dxengineering.com/search...rder=Ascending

https://www.dxengineering.com/parts/ysu-gs-050

You would have to be handy with tools to make it work.

For that much antenna you need a ham rotator, but they are more expensive.
https://www.dxengineering.com/parts/ysu-g-450a
Thank you for the reply.
I did price the ham radio motors and they're out of my price range, but a thrust bearing looks like my solution, if I can get a J-pole that is long enough on the vertical top end.
The J-Poles I have are old Dish/DirecTV mounts, since they're Free. Lol
I thought about mounting a very long pole into the ground, but this area of the roof is directly above a concrete patio, and this appears to be the best area to point at Mt. Wilson's TV towers.

Do you think I can weld/fix this rotor even though it's aluminum cast metal?

Thank you again!
__________________
HD8200XL with RCA TVPRAMP1R pre-amp aimed at Mt. Wilson (Los Angeles) in Etiwanda area.
CM3410 dist. amp in attic for a 5 room hookup.

Located in foothills behind Mt. Baldy, and experiencing signal loss and pixelation depending on time of day.
Using RCA rotator motor now to tweak.

Location Radar
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Old 6-Feb-2018, 2:10 PM   #4
rickbb
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Join Date: Dec 2014
Posts: 271
Quote:
Originally Posted by jerrymc View Post
Do you think I can weld/fix this rotor even though it's aluminum cast metal?

Thank you again!
No, aluminum is very difficult to weld and cast is nearly impossible to weld.
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Old 6-Feb-2018, 2:33 PM   #5
rabbit73
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Join Date: Aug 2012
Location: S.E. VA
Posts: 2,153
Quote:
Originally Posted by rickbb View Post
No, aluminum is very difficult to weld and cast is nearly impossible to weld.
That is correct.

Time for a new rotator, if you need to rotate the antennas.
__________________
If you can not measure it, you can not improve it.
Lord Kelvin, 1883
http://www.megalithia.com/elect/aeri...ttpoorman.html
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Old 8-Feb-2018, 8:04 PM   #6
Stereocraig
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Join Date: Sep 2012
Posts: 461
Unless you use a TIG, you'd probably just blow right through the casing. That and lack of contact area Maybe nice to practice on, just don't get discouraged.
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